package com.atguigu.cart.interceptor;

import com.atguigu.cart.vo.UserInfoTo;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.constant.CartConstant;
import com.atguigu.common.vo.MemberRespVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.UUID;

/**
 * 在执行目标方法之前，判断用户的登录状态。并封装传递给controller目标请求
 *
 */
public class CartInterceptor implements HandlerInterceptor {
    public static ThreadLocal<UserInfoTo> threadLocal = new ThreadLocal<>();

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        UserInfoTo userInfoTo = new UserInfoTo();
        HttpSession session = request.getSession();
        MemberRespVo member = (MemberRespVo)session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (member != null){
            userInfoTo.setUserId(member.getId());
        }else {
            response.sendRedirect("http://auth.gulimall.com/login.html");
        }
        /**
         * 临时用户不要了
         */
//        Cookie[] cookies = request.getCookies();
//        if (cookies != null && cookies.length>0){
//            for (Cookie cookie : cookies) {
//                String name = cookie.getName();
//                if (name.equals(CartConstant.TEMP_USER_COOKIE_NAME)){
//                    userInfoTo.setUserKey(cookie.getValue());
//                }
//            }
//        }
        //如果没有临时用户，一定分配一个临时用户
//        if (StringUtils.isEmpty(userInfoTo.getUserKey())){
//            String uuid = UUID.randomUUID().toString();
//            userInfoTo.setUserKey(uuid);
//
//        }
        //目标方法执行之前
        threadLocal.set(userInfoTo);
        return true;
    }


}
